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/*
* Copyright (c) 2016 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef included_vnet_vnet_device_h
#define included_vnet_vnet_device_h
#include <vppinfra/pcap.h>
#include <vnet/l3_types.h>
typedef enum
{
VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT,
VNET_DEVICE_INPUT_NEXT_IP4_INPUT,
VNET_DEVICE_INPUT_NEXT_IP6_INPUT,
VNET_DEVICE_INPUT_NEXT_MPLS_INPUT,
VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT,
VNET_DEVICE_INPUT_NEXT_DROP,
VNET_DEVICE_INPUT_N_NEXT_NODES,
} vnet_device_input_next_t;
#define VNET_DEVICE_INPUT_NEXT_NODES { \
[VNET_DEVICE_INPUT_NEXT_DROP] = "error-drop", \
[VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT] = "ethernet-input", \
[VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT] = "ip4-input-no-checksum", \
[VNET_DEVICE_INPUT_NEXT_IP4_INPUT] = "ip4-input", \
[VNET_DEVICE_INPUT_NEXT_IP6_INPUT] = "ip6-input", \
[VNET_DEVICE_INPUT_NEXT_MPLS_INPUT] = "mpls-input", \
}
typedef struct
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
/* total input packet counter */
u64 aggregate_rx_packets;
} vnet_device_per_worker_data_t;
typedef struct
{
vnet_device_per_worker_data_t *workers;
uword first_worker_thread_index;
uword last_worker_thread_index;
uword next_worker_thread_index;
} vnet_device_main_t;
typedef struct
{
u32 hw_if_index;
u32 dev_instance;
u16 queue_id;
vnet_hw_interface_rx_mode mode;
u32 interrupt_pending;
} vnet_device_and_queue_t;
typedef struct
{
vnet_device_and_queue_t *devices_and_queues;
vlib_node_state_t enabled_node_state;
} vnet_device_input_runtime_t;
extern vnet_device_main_t vnet_device_main;
extern vlib_node_registration_t device_input_node;
extern const u32 device_input_next_node_advance[];
extern const u32 device_input_next_node_flags[];
static inline void
vnet_hw_interface_set_input_node (vnet_main_t * vnm, u32 hw_if_index,
u32 node_index)
{
vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
hw->input_node_index = node_index;
}
void vnet_hw_interface_assign_rx_thread (vnet_main_t * vnm, u32 hw_if_index,
u16 queue_id, uword thread_index);
int vnet_hw_interface_unassign_rx_thread (vnet_main_t * vnm, u32 hw_if_index,
u16 queue_id);
int vnet_hw_interface_set_rx_mode (vnet_main_t * vnm, u32 hw_if_index,
u16 queue_id,
vnet_hw_interface_rx_mode mode);
int vnet_hw_interface_get_rx_mode (vnet_main_t * vnm, u32 hw_if_index,
u16 queue_id,
vnet_hw_interface_rx_mode * mode);
static inline u64
vnet_get_aggregate_rx_packets (void)
{
vnet_device_main_t *vdm = &vnet_device_main;
u64 sum = 0;
vnet_device_per_worker_data_t *pwd;
vec_foreach (pwd, vdm->workers) sum += pwd->aggregate_rx_packets;
return sum;
}
static inline void
vnet_device_increment_rx_packets (u32 thread_index, u64 count)
{
vnet_device_main_t *vdm = &vnet_device_main;
vnet_device_per_worker_data_t *pwd;
pwd = vec_elt_at_index (vdm->workers, thread_index);
pwd->aggregate_rx_packets += count;
}
static_always_inline vnet_device_and_queue_t *
vnet_get_device_and_queue (vlib_main_t * vm, vlib_node_runtime_t * node)
{
vnet_device_input_runtime_t *rt = (void *) node->runtime_data;
return rt->devices_and_queues;
}
static_always_inline uword
vnet_get_device_input_thread_index (vnet_main_t * vnm, u32 hw_if_index,
u16 queue_id)
{
vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
ASSERT (queue_id < vec_len (hw->input_node_thread_index_by_queue));
return hw->input_node_thread_index_by_queue[queue_id];
}
static_always_inline void
vnet_device_input_set_interrupt_pending (vnet_main_t * vnm, u32 hw_if_index,
u16 queue_id)
{
vlib_main_t *vm;
vnet_hw_interface_t *hw;
vnet_device_input_runtime_t *rt;
vnet_device_and_queue_t *dq;
uword idx;
hw = vnet_get_hw_interface (vnm, hw_if_index);
idx = vnet_get_device_input_thread_index (vnm, hw_if_index, queue_id);
vm = vlib_mains[idx];
rt = vlib_node_get_runtime_data (vm, hw->input_node_index);
idx = hw->dq_runtime_index_by_queue[queue_id];
dq = vec_elt_at_index (rt->devices_and_queues, idx);
clib_atomic_store_rel_n (&(dq->interrupt_pending), 1);
vlib_node_set_interrupt_pending (vm, hw->input_node_index);
}
/*
* Acquire RMW Access
* Paired with Release Store in vnet_device_input_set_interrupt_pending
*/
#define foreach_device_and_queue(var,vec) \
for (var = (vec); var < vec_end (vec); var++) \
if ((var->mode == VNET_HW_INTERFACE_RX_MODE_POLLING) \
|| clib_atomic_swap_acq_n (&((var)->interrupt_pending), 0))
#endif /* included_vnet_vnet_device_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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